Saw-clamp.



H. M. WOOD.

SAW CLAMP.

APPLICATION FILED SEPT. Is, IsIIz.

1, 1 87,301 Patented Apr. 27., 1915.

THE NORRIS PETERS C0.. PHOTO-LITHO.. WASHINGTON, D. C.

HARVEY ,1VL WOOD, OF LOS ANGELES, CALIFORNIA.

SAW-CLAMP.

i To all whom t may concern State of California, have invented a newV and useful Saw-Clamp, of which the following is a specification. y

The object of his invention is to provide a cheap, simple, easily manufactured, lassembled and operated saw clamp adapted for clamping the saw to hold it during the operation of setting and joining and to also hold the saw during the operation of ling.

A further, object of the invention is to provide a saw clamp construction which can be largely manufactured from stamped sheet metal. f v. The accompanying drawings illustrate the invention. Y y

Figure 1 is a perspective view of the saw clamp fastened to a bench, a fragment of which is shown. Fig. 2 is a plan view of `the saw clamp detached. 4 Fig. 3 is a longitudinal section on line w3, Fig. 2, turned end for end and looking in the direction of the arrow. Fig; 4 is an enlarged cross section. of Fig. 1 on line indicated at x4, Figs. 2and 3,* a fragment of a saw being shown clamped for setting and joining. Fig. 5 is a cross section of a stamping to form the base. Fig. 6 is a cross section ofa stamping for the dou ble slidable jaw. Fig. 7 is a cross section of a stamping for the double acting jawclamping slide. Fig. 8 is an elevationalsection on line indicated at ma, Figs. 2 and 3,'l of a stamping for one of the end arms. Figs. 9, 1,0', 11 and 12 are views of the blanks from which the four stampings shown in Figs. 5,

6, 7 and 8 are formed. Dotted linesindicate the points at which the bending takes-place;

Figs. 2,3, 5, 6, 7,8 and 12 are on a,;scale twice that of Figs.'9, 10 and 11. Figgl is on a'larger scale and Fig. 4 ona still'larger scale. Fig. 13 is an inverted yplan of .the pivotpost and bearing block therefor. x

, kThe base is an oblong rectangular piece of Y sheetv metal' bent to form the dependent Specification of Letters Patent.

PatentedApr. 27, 1915.

Application led September 16, 1912. Serial N o. 720,669.

The end arms are formed with a straight limb 10 and an overhanging arch 11; the straight limbs 10 being provided with rivet holes 12 and a fastener hole 13 corresponding to the holes l and 6 in the bed and said limbs .10 being fixed to the bed by rivets 14. The overhanging arches 11 are provided in their lower free ends with holes l5 for fasteners which may be in the form of rivets 16 by means of which the front clamp bar 17 is fastened to the inner faces of the free ends of the overhanging arches. The front clamp bar 17 is preferably of metal in the form of channel iron and is rigid so as to form a firm support for the saw to resist the forward thrust of the saw when clamped.

The sliding clamp member is a sheet metal channel stamping having a web 18, an-upright clamp flange 19 and an upright clamp bar holding flange 20; the web 18 being provided with a transverse slot 21 to register with the central perforation 5 and the clamp bar holding flange 20 being provided with end perforations 22 to receive fasteners as the screws 23 which are screwed into the wooden rear clamp bar 21 which may be a rectangular bar of wood corresponding in length with the sliding clamp member to cooperate with the metal bar 17 for clamping the saw when it is to be led. The clamp iange 19 of the sliding clamp is designed to coperate with the upright flange 3 to clamp the back of the saw and hold it during the operation of setting and jointing.

The clamp post 25 is provided at its lower end with a reduced pin 26 to fit the perforation l5 in the bed 2, and is provided at-the othei1 end with a head 27, and is inserted through the bearing block 28 which is provided with a flange 29'to rest on the slide 80 and is also provided with an oblong boss 31 thatfits the diagonal slot 32 in said slide 30 which is van oblong piece ofsheet metal having-upturned ends '33 that yform handles by which the slide 30 can be moved endwise*l in the channel of the sliding clamp. The slide y30 is provided intermediate its ends with the diagonal slot 32 inwhich the boss 31 fits so that when the slide is movedfend- .wise it reacts upon the boss and the fixed clamp post, so as to be shifted laterally simultaneously and correspondingly with the endwise shifting movement; andV by engagement with the ange 19 or 20l as the case or the'other direction to close the rear clamp slot 34 or the front clamp slot 35 as the case may be. Y

To assemble the clamp the end arms 10, 11 are first riveted to the angle iron front clamp bar 17 by rivets 16 and then said end arms are riveted to the bed 2 by rivets 1.4. Then the wooden rear clamp bar 24 is fastened to the flange 20 of the sliding clamp member by the screws 23; the slide 30 is then put in place on the web 18 between the flanges 19, 20; the boss 31 of the bearing block 28 is inserted into the slot 32 with the flanges 29 resting on the slide 30; and when the clamp post 25 is inserted through the bearing block, the slot 21, and the hole 5 and is there secured by suitable means 'as by riveting the pin 26 to the bed 2.

To install the clamp on a work bench 9, the bed 2 is placed on the top of the bench and the heads of the rivets 14 support the bed above the bench 9 to accommodate the end pin 26. The workman then taps the dependent flange 1 to drive the spurs 7 into the bench. Then fasteners in the form of screws or nails36k are driven through the holes13 into the bench thus firmly fixing the clamp in place. V'lhe clamp is then ready for use.

To' clamp the saw for filing, its toothed edge will be inserted up through lthe slot 35 to bring the teeth above the bars 17 and 24. And the slide 30 will then be driven to thelef't in Figs. 1, 2 and 3 thus moving the bar 24 to the left in Fig. 4. A reverse operation opens the saw setting clamps and releases the saw. The Wooden clamp bar 24 is wider than the metal clamp bar 17 and its top isV above the level of the top of the bar 17 so as to give a strong backing behind the saw just below the saw teeth and to give trlnple roomiin front in which to handle the To clamp the saw 37 for setting it, the back'of the'saw is inserted withfits back in the slot 34 and resting on the ends of the armslO and the slide 30 is then driven to the right in Figs. 1, 2 and 3, thus shifting the sliding clampmember to clamp the saw in slot 34. A reverse operation releases the saw.

The tops of the arms 10 support the back of the saw above the bend betweenthe web andflange of the bed 2'so that the flat face of flange 3 mayfit tightly against the saw to hold it firmly. f Y

When the saw clamp is'fiXed to abench itis not obtrusive on account of its compact construction, and the sliding clamp member may be Yshifted in one andthe other rdirection to operate thefront and rearclamps alternatively.

I vclaim 1. A saw clamp comprising forward 'clamping-"means adapted to hold the saw while being filed, rearward clamping means adapted to hold the saw while the teeth are being set, and means located between said forward and rearward clamping means for operating the clamps alternatively.

2. In a saw clamp, a relatively fixed clamp Amember having two saw engaging portions,

a relatively movable clamp member coperating with the said saw engaging portions to hold a saw in a position for filing and in a position for teeth setting, and sliding means for shifting the movable clamp member, alternatively into coperative clamping positions with the said saw engaging portions, the said sliding means having a longitudinal movement relative to the movable clamp member, and a corresponding longitudinal and lateral movement relative to the fixed clamp member, to-adjust-to the cooperative clamping positions.

3. A saw clamp comprising clamping means having two-elongated clamping bars, the upper face of one being at a vhigher level than the upper'face-of the other, said clamping means being adapted to hold the saw while being filed, other clamping means adapted to hold the saw while the teeth are being set, and means located between the two said clamping means for operating the clamps alternatively.

4. A saw clamp comprising a base carrying two clamping bars, each of which bars form part of two separate clamping means, a member movably mounted on said base, said member also carrying two clamping bars, each of which last said bars also form a part of the two Vsaid separate clamping means, and means for moving said member for operating the two said clamping means alternatively.

5. A saw clamp comprising 5a base, two clamping bars thereon, each of which-bars forms a part of separate clamping means, a laterally adjustable plate mounted on said base, clamping bars on'the adjustable plate complemental to the first-named bars, and means for alternatively adjusting the sepa- -rate'clamping means to an operative position consisting of an operating' plate sliding longitudinally upon the laterally adjustable clampplate having a diagonal slot, and a retaining member projecting fromV the'base intoffsaid slot in the operating plate causing the operating plate to have simultaneous corresponding longitudinal and transverse movements in effecting the adjustment of the clampingv means.

v6. A saw clamp comprising a base provided with two separate clamping bars, a post onsaidbase, a clamp plate 'slidably mounted on said base and provided with two separate clamping bars adapted to cooperate with the first said clamping bars so asv to form two separate saw-clamping means, j

and an operating plate located between the .tra

clamping bars of said clamp-plate, said operating plate having a diagonal slot adapted to coperate with said post so as to operate the two saw-clamping means alternatively.

7. A saw clamp comprising a sheet metal base provided with a forward and a rearward clamping bar, a post mounted on said base, a sheet metal clamp-plate slidably mounted upon said base and also provided with a forward and a rearward clamping bar, and a plate located vbetween the two last said clamping bars and having a diagonal slot in which said post extends; the last said plate being adapted to move the clamp-plate forward and rearward alternatively.

8. A saw clamp comprising fixed clamping bars, a post between said bars, a channel member having flanges and slidably mounted between the ixed clamping bars, the flanges of said channel membercoperating with the fixed clamping bars to form two complete saw-clamping means, a plate between said channel flanges and slidably mounted between the same, the said plate having a slot adapted to coperate with said post, so that said plate may operate either of said saw-clamping means alternatively.

l9. A saw clamp comprising xed clamping bars, a fixed post between the same, a

channel member slidably mounted between the xed clamping bars the anges of said channel member coperating with the fixedv clamping bars to form two complete clamps, a plate fitting between the channel flanges and slidably mounted between the same, the plate having a diagonal slot through which the post extends, and means attached to said plate for conveniently sliding the plate longitudinally of the channel.

. 10. In a saw clamp, the combination with a base and a relatively adjustable clamp bar plate mounted thereon, of complementary clamping bars on the base and adjustable plate co-acting to hold a saw in two positions, and actuating means relative to the base and adjustable plate having simultaneous and corresponding lateral and endwise movements effectual in adjusting, setting, nd releasing the complementary clamping ars.

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 9th day of September, 1912.

HARVEY M. WOOD.

In presence of- JAMEs R. TowNsEND, L. BELLE RICE.

Gopies of this patent may be obtained for ve cents each, by addressing the i Commissioner of Patents, Washington, D. C. 

